Third Book

The third Book. This Book shews the wayes to make the colour of Gold Yellow, of the Amethist, Saphyre, Granat, Velvet Black,Milk White, Marble,and Deep Red; As also to make Fritt with na¬
tural Crystal, and to colour glass of a Pearl colour, and other particulars necessary in this Art
CHAP . XLV.
THis third Book teacheth various wayes, and one better than another, to make all the abovesaid colours; As al¬
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88 The third Book.
fo a particular way to make Fritt of natu¬ral Cryftal, which will melt as ordinary Cryftal metall,and will make vcflels very white, beautiful, and Lightly. There is no doubt but fome of thofe colours arc known to Artift?, though not to all perfons. For few they arc that know how to make well Gold Yellow, and a Deep Red, being hard and nice colours in this Art. Since in ma¬king them ’tis r.tccflary you be pundual in the dofc, time, circumftanccs , and ma-terials : for if you err but a very little in any of them whatsoever, all the whole la¬bour and bufinefs is loft and comes to no¬thing. I defepbe thefe two colours, and all other, in fo clear and intelligible a ftile, iliac every body may undtrftand, and make them to their guft and fatisfa&ion.
Tou mufi le exalt in the time, quantity,cir- cumflances,purifying, powdering, forcing, fire, materials , if you err lut a little in any of them whatfoever, all the labour is lofi , and the colours come to nothing.
2. Tartar le of Red-nine well vitri¬fied in the ve/Jefingcofs pieces,not in powder, nitrified natut ally of themfelves. That of white wine is not good.
$. To Mangancfc author fit ll fuljoyns of
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4. The colour muß I e made fuller or lighter according to the works you employ them for, and to heighten them, put in more of the colour,but to make them lighter, put into the pot more Fritt. Take fome metall out of the pot, and you fball fee whether you have your dejired colour •, put in your colours by little and little left they orverdo.
5. Put your colour to the Fritt, and not to the metall, when melted, for then it neither takes the colour fo well, nor fo good a co¬lour.
6. Mix the colours well with the metall in the pots j when ’tis melted, that both may be well incorporated, and this is to be done as often as you work the metall.
To make a G old T1 I low in lap.
C H A P. X L V I.
T
Akc Cryftal Fritt two parts, Rochetta Fritt one part,both made with Tarfo, (which is much better than fand ) mix and remix well thefe two Frits, and to eve¬ry hundred pound of this compoficior, take of 
of Tartar in lumps well beaten and fere cd fine, of Manganefe prepared,of each one pound, mix thefe two powders well, farft together, and then with the Frits. Then put them into the furnace, and let them ftand four days at an ordinary fire, becaufc they rife much. When the merall is puri¬fied and well coloured (which ufually is at the end of four days) work it into veflcls and works. This quantity of the materials makesamoft fair colour, which you may make deeper or lighter by adding or di* minilhing the powder or Frits. You muft put the powder in at feveral times, and not into the metal!, for then it colours not.
With thefe rules and obfervations you lhall make a very fair Gold Yellow. But if you would have it fairer and a more graceful Yellow, take all Cry flail Fritt. And thus I have frequently made this colour and al- wayes very fair.
Gar Mi
Garnat colour.
CHAP. XLVII.
T
Ake of Crystall and Rochetta Fritt, of each a like quantity, mix them well,
and to every 100 weight, add of Man¬ganese one pound, Zaffer prepared an ounce, mix well these two powders toge¬ther first, then with the Frits, then put this powder into the pot by little and lit¬tle. Mix well the Manganese with the Zaffer, for this quickens the colour, ma¬king it shining,beautiful and fair. At the end of 24 hours (when 'tis pure and well coloured) work it.
Amethis
A the moft perteft Tarfo* Manganefe prepared one pound, Zaffer prepared one ounce and a half, mix rhefe two powders well together, and then with the Fritt* and not with the mctall in the pots. The pro¬portion is one ounce of the mixed powder to one pound of the Fritt. When the mctall is pure and well coloured work it into vetfeis, &c.
Saphyre
Saphyre colour.
CHAP. XLIX.
PO every hundred weight of Rochetta A Fritt, add one pound of Zajjer prepa¬red,& to every pound of Zajjer one ounce of Manganefe, mix thefe two well together firft, and then with the Fritt* put them all mixed into the furnace to melt and pu- rifie, and when ’tis pure, and well colour¬ed work it, Sec. This fmall quantity of Manganefe makes a moft fair colour of a double violet, which I have often made at Pi fa and always well.
A fairer Sapbyre colour.
CHAP. L.
TNflead of Rothetta Fritt * take Cryftal ■* Fritt* whereto add the fame quantity of the forefaid powder, with the fame rules, and you thill have a fair, and fhining Sa¬pere colour.
A TSlack. colour.
C H A P. LI. j
fAkc pieces of broken glafles of many colours, grind them ("mall, and put to
. them Manga/iefe 3c Zaffer, to wit, not more than half of Manganefe co the Zaffer. This glafs purified will be of a molt fair Black, fhining like velvet, and will ferve for tubes and all kindcs of works.
.A much fairer Blacf.
CHAP. LI I.
TAk e of the Frits of Cryftal and Polve- verine,o( each 20 pound,Calx of Lead, and Tin four pound, mix all together, fet them in a pot in the furnace well heated, and when the metall is pure, take ftecl well calcined and powdered, {tales of Iron which fall from the Smiths anvi^of each a like quantity, powder and mix them well, put fix ounces of this powder to the' faid metall that they may both ftronglv boil, let them fettle 12 hours, and fometimes mix the metall, and then work it. This will be a moft fair Velvet Black, and plcafant, to
make all forts of works.
Another
The third Book.
Another fairer ‘Black
f
CHAP. LI II.
TO a hundred weight of Rochetta Fritt, give two pound of Tartar, and of Manganefe fix pound, both pulverifcd, mix them and put them in the furnace leafurely, let the metall purifie, which will be about the end of four dayes, then mix, and wafh the faid metall,which will make a more marvellous black than all the former.
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A fair mill^ White called Lattimo.
CHAP. LIV.
TAke of Cryftal Fritt twelve pound, of calcined Lead and Tin two pound, mix them well, of Manganefe prepared half an ounce, unite them all together and put them into a pot heat cd, let them ftand twelve hours that the materials may be melted, and at the end of eight hours you may work it. This will be a fair White which I have often made.
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A fair. White much whiter than the former.
CHAP . LV.
T
Ake 400 weight of Crystal Fritt, and 60 pound of calcined Tin, and two pound and a half of Manganese prepared, powder and mix them all with the Fritt, and set them in a furnace in a pot, let them refine, and at the end of 18 hours this stuff will be purified, which cast into wa¬ter, purifie it again in the furnace,and make a proof, and if it be too clear add 15 pound of the aforesaid calcined Tin, mix well the metall many times, and at the end of one day it becomes marvellous white, and in whiteness surpasseth any snow,then work it. I have often made it and always with good success. This white may be also made with Rocbetta, but not so white as with Crystal.
To
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To make a Marble colour.
CHAP. LVI.
I
P
Ut Cryftal Fort in a pot, and when ’tis melted (before ’tis purified) work it. This is a fair Marble colour.
A Peach colour in White.
CHAP. LVII.
M
Anganefe prepared will make in Lattimo the colour of a Peach- flower. But work it in time becaufe it lofeth colour.
A Deep Fed.
• CHAP. LVIII.
TAkc of Cryftal Fritt 20 pound , bro- 1 ken pieces of white glafs one pound, calcined Tin two pound, mix thefe well together, put them into a pot to run and pur i fie, when thefe are melted, take ftecl calcined , fcales of Iron from the an¬vil, both well ground, of each a like quan¬tity, mix them together, put Icafurely of this mixture, about an ounce, to the a- forefaid mctall when purified, and mix them well, and let them incorporate, which fucceeds commonly in five or fix hours. Too much powder makes the me- tall black, whereas the colour ought tc be tranfparcnt and not opacous, of an .obfeure Yellow; when ’tis fo, put in nc more powder, but then put abouc three quarters of an ounce of Brafs calcined tc rednefs (as in the 24 Chap.) and ground to this metall, and mix them many times, and at about three or four times it will be¬
come as red as blood, wherefore make es¬says often, and see whether this colour be good, and when so, work it speedily, else 'twill lose it's colour, and become black.
Besides leave the mouth of the pot open, else the colour will be lost. Let not the pot stand above 10 hours in the furnace, and suffer it not to cool as much as is pos¬
sible. When you fee the colour fade (which sometimes happens) put in some scales of Iron,which reduceth the colours. And,because this is a nice colour, use all diligence in making it by putting in the steel and scales, as also in working it.
bnsJhJsm >i.h 01
Fritt of natural Cry fal.
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CHAP. LIXi
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C
d lei tie natural Cryftal in a Chryfible, extinguish it in common cold water eight times, cover the Cryfible that no alhes nor filth get in, Dry the calcined Cryftal, and grind it to an impalpable powder, mix this powder with (alt of Polverine made in a glafs body,as in Chap. 3. with thefe make a Fritt, oblerving the quantities, rules,and portion of Manganefe, fetting it in the furnace, & at due, and often times cafting it into the water, purifying and working it as in other Cryftal. And thus you will make a marvellous thing.
A Pearl colour in Crystal.
CHAP . LX.
P
Ut at 3 or 4 times to Crystal melte and purified, of Tartar well calcin'd
to whiteness, and continue to put in the Tartar 4 or 6 times,always mixing it well with the metall, till the Crystal hath got¬
ten a Pearl colour. Then work it speedily, for this colour fadeth. This I have often practised and experimented.
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